Bump @types/node from 22.7.5 to 22.9.0 (#301)

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/checkin.yml

@@ -1,36 +0,0 @@
-name: "PR Checks"
-on: [pull_request, push]
-
-concurrency:
-  # Skip intermediate builds: all builds except for builds on the `master`, `main`, or `release-*` branches
-  # Cancel intermediate builds: only pull request builds
-  group: ${{ github.workflow }}-${{ github.ref }}-${{ github.ref != 'refs/heads/master' || github.ref != 'refs/heads/main' || startsWith(github.ref, 'refs/heads/release-') || github.run_number }}
-  cancel-in-progress: ${{ startsWith(github.ref, 'refs/pull/') }}
-
-jobs:
-  check_pr:
-    runs-on: ubuntu-latest
-    timeout-minutes: 60
-    steps:
-    - uses: actions/checkout@v4
-
-    - uses: actions/setup-node@v4
-      with:
-        node-version-file: '.tool-versions'
-
-    - name: "npm ci"
-      run: npm ci
-
-    - name: "npm run build"
-      run: npm run build
-
-    - name: "npm run test"
-      run: npm run test
-
-    - name: "check for uncommitted changes"
-      # Ensure no changes, but ignore node_modules dir since dev/fresh ci deps installed.
-      run: |
-        git diff --exit-code --stat -- . ':!node_modules' \
-        || (echo "##[error] found changed files after build. please 'npm ci && npm run build'" \
-                 "and check in all changes" \
-            && exit 1)

.github/workflows/example-builds.yml

@@ -27,6 +27,13 @@ jobs:
         exclude:
           - os: macOS-latest
             julia-arch: x86
+        include:
+          - os: macOS-latest
+            julia-arch: aarch64
+            julia-version: 'lts'
+          - os: macOS-latest
+            julia-arch: aarch64
+            julia-version: '1'
 
     steps:
       - uses: actions/checkout@v4

.github/workflows/pr_checks.yml

@@ -0,0 +1,222 @@
+name: PR Checks
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+    tags: '*'
+concurrency:
+  # Skip intermediate builds: all builds except for builds on the `master` branch
+  # Cancel intermediate builds: only pull request builds
+  group: ${{ github.workflow }}-${{ github.ref }}-${{ github.ref != 'refs/heads/master' || github.run_number }}
+  cancel-in-progress: ${{ startsWith(github.ref, 'refs/pull/') }}
+permissions:
+  contents: read
+jobs:
+  finalize-pr-checks:
+    if: always() # this line is important to keep the `finalize` job from being marked as skipped; do not change or delete this line
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    needs:
+      - checked-in-files
+      - build
+      - npm-run-test
+      - make-targets
+      - stalecheck-npm-install
+    steps:
+      - run: |
+          echo checked-in-files: ${{ needs.checked-in-files.result }}
+          echo build: ${{ needs.build.result }}
+          echo npm-run-test: ${{ needs.npm-run-test.result }}
+          echo make-targets: ${{ needs.make-targets.result }}
+          echo stalecheck-npm-install: ${{ needs.stalecheck-npm-install.result }}
+      - run: exit 1
+        if: ${{ contains(needs.*.result, 'failure') || contains(needs.*.result, 'cancelled') || contains(needs.*.result, 'skipped') }}
+  checked-in-files:
+    timeout-minutes: 30
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+    steps:
+      ### Check out the repo:
+      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332
+        with:
+          persist-credentials: false
+      ### Cleanall:
+      - run: make cleanall
+      ### Install NodeJS
+      # Unix (non-Windows):
+      - uses: asdf-vm/actions/setup@05e0d2ed97b598bfce82fd30daf324ae0c4570e6
+        if: runner.os != 'Windows'
+      - run: make unix-asdf-install
+        if: runner.os != 'Windows'
+      # Windows:
+        # Windows does not support asdf, so we have to use `actions/setup-node`
+        # to install asdf:
+      - uses: actions/setup-node@1e60f620b9541d16bece96c5465dc8ee9832be0b
+        if: runner.os == 'Windows'
+        with:
+          node-version-file: '.tool-versions'
+      ### Install the NodeJS packages that we depend on:
+      - run: make install-packages
+      ### Print some debugging info:
+      - name: Print the NodeJS version (for debugging)
+        run: |
+          which -a node
+          node --version
+          which -a npm
+          npm --version
+      ### Build:
+      - run: make pack
+      ### Clean (not cleanall!):
+      - run: make clean
+      ### Make sure there are no uncommited changes
+      - uses: julia-actions/setup-julia@9b79636afcfb07ab02c256cede01fe2db6ba808c # v2.6.0
+        with:
+          version: '1'
+      - run: git --no-pager status
+      - run: git --no-pager diff
+      - run: julia ./ci/check_uncommitted_changes.jl
+  build:
+    timeout-minutes: 30
+    runs-on: ubuntu-latest
+    steps:
+      ### Check out the repo:
+      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332
+        with:
+          persist-credentials: false
+      ### Cleanall:
+      - run: make cleanall
+      ### Install NodeJS
+      # Unix (non-Windows):
+      - uses: asdf-vm/actions/setup@05e0d2ed97b598bfce82fd30daf324ae0c4570e6
+        if: runner.os != 'Windows'
+      - run: make unix-asdf-install
+        if: runner.os != 'Windows'
+      # Windows:
+        # Windows does not support asdf, so we have to use `actions/setup-node`
+        # to install asdf:
+      - uses: actions/setup-node@1e60f620b9541d16bece96c5465dc8ee9832be0b
+        if: runner.os == 'Windows'
+        with:
+          node-version-file: '.tool-versions'
+      ### Install the NodeJS packages that we depend on:
+      - run: make install-packages
+      ### Print some debugging info:
+      - name: Print the NodeJS version (for debugging)
+        run: |
+          which -a node
+          node --version
+          which -a npm
+          npm --version
+      ### Build:
+      - run: make build
+      - run: make pack
+      ### Make sure some other `make` targets don't bitrot:
+      - name: Run some other `make` targets to ensure that they don't bitrot
+        run: |
+          make clean
+          make cleanall
+      - name: Run all of the "cleaning" `make` targets to ensure that they don't bitrot
+        run: |
+          make clean
+          make cleanall
+  npm-run-test:
+    timeout-minutes: 30
+    runs-on: ubuntu-latest
+    steps:
+      ### Check out the repo:
+      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332
+        with:
+          persist-credentials: false
+      ### Cleanall:
+      - run: make cleanall
+      ### Install NodeJS
+      # Unix (non-Windows):
+      - uses: asdf-vm/actions/setup@05e0d2ed97b598bfce82fd30daf324ae0c4570e6
+        if: runner.os != 'Windows'
+      - run: make unix-asdf-install
+        if: runner.os != 'Windows'
+      # Windows:
+        # Windows does not support asdf, so we have to use `actions/setup-node`
+        # to install asdf:
+      - uses: actions/setup-node@1e60f620b9541d16bece96c5465dc8ee9832be0b
+        if: runner.os == 'Windows'
+        with:
+          node-version-file: '.tool-versions'
+      ### Install the NodeJS packages that we depend on:
+      - run: make install-packages
+      ### Print some debugging info:
+      - name: Print the NodeJS version (for debugging)
+        run: |
+          which -a node
+          node --version
+          which -a npm
+          npm --version
+      ### Build:
+      - run: make build
+      - run: make test
+  make-targets: # This is a job to make sure that none of the `make` targets bitrot
+    timeout-minutes: 30
+    runs-on: ubuntu-latest
+    steps:
+      ### Check out the repo:
+      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332
+        with:
+          persist-credentials: false
+      ### Cleanall:
+      - run: make cleanall
+      ### Install NodeJS
+      # Unix (non-Windows):
+      - uses: asdf-vm/actions/setup@05e0d2ed97b598bfce82fd30daf324ae0c4570e6
+        if: runner.os != 'Windows'
+      - run: make unix-asdf-install
+        if: runner.os != 'Windows'
+      ### Install the NodeJS packages that we depend on:
+      - run: make install-packages
+      ### Make sure some other `make` targets don't bitrot:
+      - name: Run some other `make` targets to ensure that they don't bitrot
+        run: |
+          make unix-asdf-install
+          make install-packages
+          make build
+          make pack
+          make everything-from-scratch
+      - name: Run all of the "cleaning" `make` targets to ensure that they don't bitrot
+        run: |
+          make clean
+          make cleanall
+  stalecheck-npm-install:
+    # In this job, we are basically trying to check if `package-lock.json` is in
+    # sync with `package-lock.json`.
+    #
+    # So, for example, if someone manually edits the `package.json` file, we want
+    # to make sure that the `package-lock.json` file is not out of sync with the
+    # `package.json` file.
+    timeout-minutes: 30
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+    steps:
+      ### Check out the repo:
+      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332
+        with:
+          persist-credentials: false
+      ### Install NodeJS
+      # Unix (non-Windows):
+      - uses: asdf-vm/actions/setup@05e0d2ed97b598bfce82fd30daf324ae0c4570e6
+        if: runner.os != 'Windows'
+      - run: make unix-asdf-install
+        if: runner.os != 'Windows'
+      ### Run the master commands for this job:
+      - run: make clean
+      - run: npm ci
+      # - run: npm install --package-lock-only
+      - run: npm install
+      ### Make sure there are no uncommited changes
+      - uses: julia-actions/setup-julia@9b79636afcfb07ab02c256cede01fe2db6ba808c # v2.6.0
+        with:
+          version: '1'
+      - run: git --no-pager status
+      - run: git --no-pager diff
+      - run: julia ./ci/check_uncommitted_changes.jl

.gitignore

@@ -1,3 +1,2 @@
 node_modules/
 __tests__/runner/*
-!dist/

.gitmodules

@@ -1,3 +0,0 @@
-[submodule "bin"]
-	path = bin
-	url = git@github.com:julia-actions/bin.git

Makefile

@@ -0,0 +1,49 @@
+.NOTPARALLEL:
+
+# This is the default target:
+.PHONY: pack
+pack: build
+	npm run pack
+
+# ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+
+.PHONY: everything-from-scratch
+everything-from-scratch: cleanall install-packages build pack clean
+
+# build does `npm run build`, but does not run `npm run pack`
+.PHONY: build
+build:
+	npm run build
+
+.PHONY: test
+test:
+	npm run test
+
+.PHONY: install-packages
+install-packages:
+	rm -rf node_modules/
+	# Note: we use `npm ci` instead of `npm install`, because we want to make sure
+	# that we respect the versions in the `package-lock.json` lockfile.
+	npm ci
+
+# ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+
+.PHONY: clean
+clean:
+	rm -rf node_modules/
+
+.PHONY: cleanall
+cleanall: clean
+	rm -rf lib/
+	rm -rf dist/
+
+# ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+
+# asdf does not support Windows.
+# On Windows, users need to install the correct version of NodeJS themselves.
+.PHONY: unix-asdf-install
+unix-asdf-install:
+	asdf plugin add nodejs # update this list when we add more tools to `.tool-versions`
+	asdf install
+
+# +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

README.md

@@ -71,6 +71,11 @@ This action sets up a Julia environment for use in actions by downloading a spec
     #
     # Default: false
     show-versioninfo: ''
+
+    # Set the path to the project directory or file to use when resolving some versions (e.g. `min`).
+    #
+    # Defaults to using JULIA_PROJECT if defined, otherwise '.'
+    project: ''
 ```
 
 ### Outputs
@@ -117,10 +122,12 @@ You can either specify specific Julia versions or version ranges. If you specify
 - `'~1.3.0-rc1'` is a **tilde** version range that includes pre-releases of `1.3.0` starting at `rc1`. It matches all versions `≥ 1.3.0-rc1` and `< 1.4.0`.
 - `'^1.3.0-0'` is a **caret** version range that includes _all_ pre-releases of `1.3.0`. It matches all versions `≥ 1.3.0-` and `< 2.0.0`.
 - `'~1.3.0-0'` is a **tilde** version range that includes _all_ pre-releases of `1.3.0`. It matches all versions `≥ 1.3.0-` and `< 1.4.0`.
+- `'1'` will install the latest v1 version of Julia.
 - `'lts'` will install the latest LTS build.
 - `'pre'` will install the latest prerelease build (RCs, betas, and alphas).
 - `'nightly'` will install the latest nightly build.
 - `'1.7-nightly'` will install the latest nightly build for the upcoming 1.7 release. This version will only be available during certain phases of the Julia release cycle.
+- `'min'` will install the earliest supported version of Julia compatible with the project. Especially useful in monorepos.
 
 Internally the action uses node's semver package to resolve version ranges. Its [documentation](https://github.com/npm/node-semver#advanced-range-syntax) contains more details on the version range syntax. You can test what version will be selected for a given input in this JavaScript [REPL](https://repl.it/@SaschaMann/setup-julia-version-logic).
 
@@ -187,12 +194,18 @@ jobs:
     strategy:
       matrix:
         julia-version: ['1.0', '1.2.0', '^1.3.0-rc1']
-        julia-arch: [x64, x86]
+        julia-arch: [x64, x86, aarch64]
         os: [ubuntu-latest, windows-latest, macOS-latest]
-        # 32-bit Julia binaries are not available on macOS
+        # exclude unavailable/unwanted architectures
         exclude:
           - os: macOS-latest
             julia-arch: x86
+          - os: macOS-latest
+            julia-arch: x64 # can be run but via rosetta on apple silicon runners
+          - os: ubuntu-latest
+            julia-arch: aarch64
+          - os: windows-latest
+            julia-arch: aarch64
 
     steps:
       - uses: actions/checkout@v4

__tests__/installer.test.ts

@@ -26,8 +26,8 @@ const testVersions = [
     '1.7.0', '1.7.0-beta1', '1.7.0-beta2', '1.7.0-beta3', '1.7.0-beta4', '1.7.0-rc1', '1.7.0-rc2', '1.7.0-rc3', '1.7.1', '1.7.2', '1.7.3',
     '1.8.0', '1.8.0-beta1', '1.8.0-beta2', '1.8.0-beta3', '1.8.0-rc1', '1.8.0-rc2', '1.8.0-rc3', '1.8.0-rc4', '1.8.1', '1.8.2', '1.8.3', '1.8.4', '1.8.5',
     '1.9.0', '1.9.0-alpha1', '1.9.0-beta1', '1.9.0-beta2', '1.9.0-beta3', '1.9.0-beta4', '1.9.0-rc1', '1.9.0-rc2', '1.9.0-rc3', '1.9.1', '1.9.2', '1.9.3', '1.9.4',
-    '1.10.0', '1.10.0-alpha1', '1.10.0-beta1', '1.10.0-beta2', '1.10.0-beta3', '1.10.0-rc1', '1.10.0-rc2', '1.10.0-rc3', '1.10.1', '1.10.2',
-    '1.11.0-alpha1', '1.11.0-alpha2', '1.11.0-beta1'
+    '1.10.0', '1.10.0-alpha1', '1.10.0-beta1', '1.10.0-beta2', '1.10.0-beta3', '1.10.0-rc1', '1.10.0-rc2', '1.10.0-rc3', '1.10.1', '1.10.2', '1.10.3', '1.10.4', '1.10.5',
+    '1.11.0', '1.11.0-alpha1', '1.11.0-alpha2', '1.11.0-beta1', '1.11.0-beta2', '1.11.0-rc1', '1.11.0-rc2', '1.11.0-rc3', '1.11.0-rc4',
 ]
 
 const toolDir = path.join(__dirname, 'runner', 'tools')
@@ -38,6 +38,135 @@ process.env['RUNNER_TOOL_CACHE'] = toolDir
 process.env['RUNNER_TEMP'] = tempDir
 
 import * as installer from '../src/installer'
+import exp from 'constants'
+
+describe("getProjectFilePath tests", () => {
+    let orgJuliaProject
+    let orgWorkingDir
+
+    beforeEach(() => {
+        orgJuliaProject = process.env["JULIA_PROJECT"]
+        orgWorkingDir = process.cwd()
+        delete process.env["JULIA_PROJECT"]
+    })
+
+    afterEach(() => {
+        process.env["JULIA_PROJECT"] = orgJuliaProject
+        process.chdir(orgWorkingDir)
+    })
+
+    it("Can determine project file is missing", () => {
+        expect(() => installer.getProjectFilePath("DNE.toml")).toThrow("Unable to locate project file")
+        expect(() => installer.getProjectFilePath(fixtureDir)).toThrow("Unable to locate project file")
+        expect(() => installer.getProjectFilePath()).toThrow("Unable to locate project file")
+    })
+
+    it('Can determine project file from a directory', () => {
+        expect(installer.getProjectFilePath(path.join(fixtureDir, "PkgA"))).toEqual(path.join(fixtureDir, "PkgA", "Project.toml"))
+        expect(installer.getProjectFilePath(path.join(fixtureDir, "PkgB"))).toEqual(path.join(fixtureDir, "PkgB", "JuliaProject.toml"))
+    })
+
+    it("Prefers using JuliaProject.toml over Project.toml", () => {
+        expect(installer.getProjectFilePath(path.join(fixtureDir, "PkgC"))).toEqual(path.join(fixtureDir, "PkgC", "JuliaProject.toml"))
+    })
+
+    it("Can determine project from JULIA_PROJECT", () => {
+        process.env["JULIA_PROJECT"] = path.join(fixtureDir, "PkgA")
+        expect(installer.getProjectFilePath()).toEqual(path.join(fixtureDir, "PkgA", "Project.toml"))
+    })
+
+    it("Can determine project from the current working directory", () => {
+        process.chdir(path.join(fixtureDir, "PkgA"));
+        expect(installer.getProjectFilePath()).toEqual("Project.toml")
+    })
+
+    it("Ignores JULIA_PROJECT when argument is used", () => {
+        process.env["JULIA_PROJECT"] = path.join(fixtureDir, "PkgB")
+        expect(installer.getProjectFilePath(path.join(fixtureDir, "PkgA"))).toEqual(path.join(fixtureDir, "PkgA", "Project.toml"))
+    })
+})
+
+describe("validJuliaCompatRange tests", () => {
+    it('Handles default caret specifier', () => {
+        expect(installer.validJuliaCompatRange("1")).toEqual(semver.validRange("^1"))
+        expect(installer.validJuliaCompatRange("1.2")).toEqual(semver.validRange("^1.2"))
+        expect(installer.validJuliaCompatRange("1.2.3")).toEqual(semver.validRange("^1.2.3"))
+
+        // TODO: Pkg.jl currently does not support pre-release entries in compat so ideally this would fail
+        expect(installer.validJuliaCompatRange("1.2.3-rc1")).toEqual(semver.validRange("^1.2.3-rc1"))
+    })
+
+    it('Handle surrounding whitespace', () => {
+        expect(installer.validJuliaCompatRange(" 1")).toEqual(semver.validRange("^1"))
+        expect(installer.validJuliaCompatRange("1 ")).toEqual(semver.validRange("^1"))
+        expect(installer.validJuliaCompatRange(" 1 ")).toEqual(semver.validRange("^1"))
+    })
+
+    it('Handles version ranges with specifiers', () => {
+        expect(installer.validJuliaCompatRange("^1.2.3")).toEqual(semver.validRange("^1.2.3"))
+        expect(installer.validJuliaCompatRange("~1.2.3")).toEqual(semver.validRange("~1.2.3"))
+        expect(installer.validJuliaCompatRange("=1.2.3")).toEqual(semver.validRange("=1.2.3"))
+        expect(installer.validJuliaCompatRange(">=1.2.3")).toEqual(">=1.2.3")
+        expect(installer.validJuliaCompatRange("≥1.2.3")).toEqual(">=1.2.3")
+        expect(installer.validJuliaCompatRange("<1.2.3")).toEqual("<1.2.3")
+    })
+
+    it('Handles whitespace after specifiers', () => {
+        expect(installer.validJuliaCompatRange("^ 1.2.3")).toBeNull()
+        expect(installer.validJuliaCompatRange("~ 1.2.3")).toBeNull()
+        expect(installer.validJuliaCompatRange("= 1.2.3")).toBeNull()
+        expect(installer.validJuliaCompatRange(">= 1.2.3")).toEqual(">=1.2.3")
+        expect(installer.validJuliaCompatRange("≥ 1.2.3")).toEqual(">=1.2.3")
+        expect(installer.validJuliaCompatRange("< 1.2.3")).toEqual("<1.2.3")
+    })
+
+    it('Handles hypen ranges', () => {
+        expect(installer.validJuliaCompatRange("1.2.3 - 4.5.6")).toEqual(semver.validRange("1.2.3 - 4.5.6"))
+        expect(installer.validJuliaCompatRange("1.2.3-rc1 - 4.5.6")).toEqual(semver.validRange("1.2.3-rc1 - 4.5.6"))
+        expect(installer.validJuliaCompatRange("1.2.3-rc1-4.5.6")).toEqual(semver.validRange("^1.2.3-rc1-4.5.6"))  // A version number and not a hypen range
+        expect(installer.validJuliaCompatRange("1.2.3-rc1 -4.5.6")).toBeNull()
+        expect(installer.validJuliaCompatRange("1.2.3-rc1- 4.5.6")).toBeNull()  // Whitespace separate version ranges
+    })
+
+    it("Returns null AND operator on version ranges", () => {
+        expect(installer.validJuliaCompatRange("")).toBeNull()
+        expect(installer.validJuliaCompatRange("1 2 3")).toBeNull()
+        expect(installer.validJuliaCompatRange("1- 2")).toBeNull()
+        expect(installer.validJuliaCompatRange("<1 <1")).toBeNull()
+        expect(installer.validJuliaCompatRange("< 1 < 1")).toBeNull()
+        expect(installer.validJuliaCompatRange("<  1 <  1")).toBeNull()
+    })
+
+    it('Returns null with invalid specifiers', () => {
+        expect(installer.validJuliaCompatRange("<=1.2.3")).toBeNull()
+        expect(installer.validJuliaCompatRange("≤1.2.3")).toBeNull()
+        expect(installer.validJuliaCompatRange("*")).toBeNull()
+    })
+
+    it("Handles OR operator on version ranges", () => {
+        expect(installer.validJuliaCompatRange("1, 2, 3")).toEqual(semver.validRange("^1 || ^2 || ^3"))
+        expect(installer.validJuliaCompatRange("1, 2 - 3, ≥ 4")).toEqual(semver.validRange("^1 || >=2 <=3 || >=4"))
+        expect(installer.validJuliaCompatRange(",")).toBeNull()
+    })
+})
+
+describe("readJuliaCompatRange tests", () => {
+    it('Can determine Julia compat entries', () => {
+        const toml = '[compat]\njulia = "1, ^1.1, ~1.2, >=1.3, 1.4 - 1.5"'
+        expect(installer.readJuliaCompatRange(toml)).toEqual(semver.validRange("^1 || ^1.1 || ~1.2 || >=1.3 || 1.4 - 1.5"))
+    })
+
+    it('Throws with invalid version ranges', () => {
+        expect(() => installer.readJuliaCompatRange('[compat]\njulia = ""')).toThrow("Invalid version range")
+        expect(() => installer.readJuliaCompatRange('[compat]\njulia = "1 2 3"')).toThrow("Invalid version range")
+    })
+
+    it('Handle missing compat entries', () => {
+        expect(installer.readJuliaCompatRange("")).toEqual("*")
+        expect(installer.readJuliaCompatRange("[compat]")).toEqual("*")
+
+    })
+})
 
 describe('version matching tests', () => {
     describe('specific versions', () => {
@@ -58,30 +187,30 @@ describe('version matching tests', () => {
 
         it('LTS', () => {
             // Update test when LTS is updated
-            expect(installer.getJuliaVersion(testVersions, 'lts')).toEqual(installer.getJuliaVersion(testVersions, '1.6'))
-            expect(installer.getJuliaVersion(testVersions, 'lts')).toEqual('1.6.7')
+            expect(installer.getJuliaVersion(testVersions, 'lts')).toEqual(installer.getJuliaVersion(testVersions, '1.10'))
+            expect(installer.getJuliaVersion(testVersions, 'lts')).toEqual('1.10.5')
         })
 
         it('pre', () => {
-            expect(installer.getJuliaVersion(testVersions, 'pre')).toEqual('1.11.0-beta1')
+            expect(installer.getJuliaVersion(testVersions, 'pre')).toEqual('1.11.0')
         })
     })
 
     describe('version ranges', () => {
         it('Chooses the highest available version that matches the input', () => {
-            expect(installer.getJuliaVersion(testVersions, '1')).toEqual('1.10.2')
+            expect(installer.getJuliaVersion(testVersions, '1')).toEqual('1.11.0')
             expect(installer.getJuliaVersion(testVersions, '1.0')).toEqual('1.0.5')
-            expect(installer.getJuliaVersion(testVersions, '^1.3.0-rc1')).toEqual('1.10.2')
-            expect(installer.getJuliaVersion(testVersions, '^1.2.0-rc1')).toEqual('1.10.2')
-            expect(installer.getJuliaVersion(testVersions, '^1.10.0-rc1')).toEqual('1.10.2')
+            expect(installer.getJuliaVersion(testVersions, '^1.3.0-rc1')).toEqual('1.11.0')
+            expect(installer.getJuliaVersion(testVersions, '^1.2.0-rc1')).toEqual('1.11.0')
+            expect(installer.getJuliaVersion(testVersions, '^1.10.0-rc1')).toEqual('1.11.0')
         })
     })
 
     describe('include-prereleases', () => {
         it('Chooses the highest available version that matches the input including prereleases', () => {
-            expect(installer.getJuliaVersion(testVersions, '^1.2.0-0', true)).toEqual('1.11.0-beta1')
-            expect(installer.getJuliaVersion(testVersions, '1', true)).toEqual('1.11.0-beta1')
-            expect(installer.getJuliaVersion(testVersions, '^1.2.0-0', false)).toEqual('1.10.2')
+            expect(installer.getJuliaVersion(testVersions, '^1.2.0-0', true)).toEqual('1.11.0')
+            expect(installer.getJuliaVersion(testVersions, '1', true)).toEqual('1.11.0')
+            expect(installer.getJuliaVersion(testVersions, '^1.2.0-0', false)).toEqual('1.11.0')
         })
     })
 
@@ -95,6 +224,34 @@ describe('version matching tests', () => {
             })
         })
     })
+
+    describe('julia compat versions', () => {
+        it('Understands "min"', () => {
+            let versions = ["1.6.7", "1.7.1-rc1", "1.7.1-rc2", "1.7.1", "1.7.2", "1.8.0"]
+            expect(installer.getJuliaVersion(versions, "min", false, "^1.7")).toEqual("1.7.1")
+            expect(installer.getJuliaVersion(versions, "min", true, "^1.7")).toEqual("1.7.1-rc1")
+
+            versions = ["1.6.7", "1.7.3-rc1", "1.7.3-rc2", "1.8.0"]
+            expect(installer.getJuliaVersion(versions, "min", false, "^1.7")).toEqual("1.8.0")
+            expect(installer.getJuliaVersion(versions, "min", true, "^1.7")).toEqual("1.7.3-rc1")
+
+            expect(installer.getJuliaVersion(versions, "min", false, "~1.7 || ~1.8 || ~1.9")).toEqual("1.8.0")
+            expect(installer.getJuliaVersion(versions, "min", true, "~1.7 || ~1.8 || ~1.9")).toEqual("1.7.3-rc1")
+            expect(installer.getJuliaVersion(versions, "min", false, "~1.8 || ~1.7 || ~1.9")).toEqual("1.8.0")
+            expect(installer.getJuliaVersion(versions, "min", true, "~1.8 || ~1.7 || ~1.9")).toEqual("1.7.3-rc1")
+
+            expect(installer.getJuliaVersion(versions, "min", false, "1.7 - 1.9")).toEqual("1.8.0")
+            expect(installer.getJuliaVersion(versions, "min", true, "1.7 - 1.9")).toEqual("1.7.3-rc1")
+
+            expect(installer.getJuliaVersion(versions, "min", true, "< 1.9.0")).toEqual("1.6.7")
+            expect(installer.getJuliaVersion(versions, "min", true, ">= 1.6.0")).toEqual("1.6.7")
+
+            // NPM's semver package treats "1.7" as "~1.7" instead of "^1.7" like Julia
+            expect(() => installer.getJuliaVersion(versions, "min", false, "1.7")).toThrow("Could not find a Julia version that matches")
+
+            expect(() => installer.getJuliaVersion(versions, "min", true, "")).toThrow("Julia project file does not specify a compat for Julia")
+        })
+    })
 })
 
 describe('installer tests', () => {

action.yml

@@ -17,6 +17,10 @@ inputs:
     description: 'Display InteractiveUtils.versioninfo() after installing'
     required: false
     default: 'false'
+  project:
+    description: 'The path to the project directory or file to use when resolving some versions (e.g. min)'
+    required: false
+    default: ''  # Special value which fallsback to using JULIA_PROJECT if defined, otherwise "."
 outputs:
   julia-version:
     description: 'The installed Julia version. May vary from the version input if a version range was given as input.'

ci/check_uncommitted_changes.jl

@@ -0,0 +1,16 @@
+const cmd = `git --no-pager diff --exit-code --stat`
+
+const proc = run(pipeline(cmd; stdin, stdout, stderr); wait = false)
+
+wait(proc)
+
+@info "" success(proc) proc.exitcode
+
+if !success(proc)
+    recommended_cmd = "make everything-from-scratch"
+    msg = "##[error] found changed files after build. " *
+           "Please run `$(recommended_cmd)` and " *
+           "then check in all changes."
+    println(stderr, msg)
+    exit(1)
+end

devdocs/local_setup.md

@@ -42,6 +42,8 @@ First, `cd` to your clone of the repo. Now you can run the following commands:
 npm ci
 
 npm run build
+
+npm run pack
 ```
 
 When you are ready, you can commit your changes and push them to your PR.

devdocs/making_a_new_release.md

@@ -1,128 +1,56 @@
 # Making a new release of this action (requires commit access)
 
-If you have commit access to this repo, you can make a new release.
+In this guide, as an example, `v2.2.0` refers to the version number of the new release that you want to make.
 
-Here are the instructions.
+## Part 1: Use the Git CLI to create and push the Git tags
 
-## Step 1: Clone a fresh copy of the repo
-
-We intentionally work in a brand-new copy of the repo.
+Step 1: Create a new lightweight tag of the form `vMAJOR.MINOR.PATCH`.
 
 ```bash
 git clone git@github.com:julia-actions/setup-julia.git
 cd setup-julia
-git checkout master
-git submodule init
-git submodule update
+git fetch --all --tags
+
+git checkout main
+
+git --no-pager log -1
+# Take note of the commit hash here.
+
+# Now, create a new lightweight tag of the form `vMAJOR.MINOR.PATCH`.
+#
+# Replace `commit_hash` with the commit hash that you obtained from the
+# `git log -1` step.
+#
+# Replace `v2.2.0` with the actual version number that you want to use.
+git tag v2.2.0 commit_hash
 ```
 
-## Step 2: Make sure you have the right version of NodeJS
-
-If you use [`asdf`](https://asdf-vm.com/), this is as simple as:
+Step 2: Once you've created the new release, you need to update the `v2` tag to point to the new release. For example, suppose that the previous release was `v2.1.0`, and suppose that you just created the new release `v2.2.0`. You need to update the `v2` tag so that it points to `v2.2.0`. Here are the commands:
 
 ```bash
-asdf plugin add nodejs
-asdf install
+# Create/update the new v2 tag locally, where the new v2 tag will point to the
+# release that you created in the previous step.
+#
+# Make sure to change `v2.2.0` to the actual value for the tag that you just
+# created in the previous step.
+#
+# The `-f` flag forcibly overwrites the old
+# `v2` tag (if it exists).
+git tag -f v2 v2.2.0
 ```
 
-If you don't use `asdf`, then you need to:
-1. Open the `./tool-versions` file in the root of the repo.
-2. Make note of the NodeJS version listed in the `.tool-versions` file.
-3. Install that same version of NodeJS on your machine.
-4. Make sure that you are currently using that version of NodeJS (i.e. it is at the front of your PATH).
-
-## Step 3: Edit the `version` field in `package.json`
+Step 3: Now you need to push the tags:
 
 ```bash
-vim package.json
+# Regular-push the new `v2.2.0` tag:
+git push origin tag v2.2.0
 
-# Edit the `version` number (should be line 2)
-# Save your changes in Vim. Then exit Vim.
-
-# For the remaining of this guide, let MAJOR.MINOR.PATCH refer
-# to the new version number that you set.
-
-git add package.json
-
-# No need to commit yet.
-# The release script will run `git commit`.
+# Force-push the new v2 tag:
+git push origin tag v2 --force
 ```
 
-## Step 4: Remove the `dist/` line from the `.gitignore` file
+## Part 2: Create the GitHub Release
 
-```bash
-vim .gitignore
-# Delete the line that says `dist/` (it should be line 3)
-# Save your changes in Vim. Then exit Vim.
+Go to the [Releases](https://github.com/julia-actions/setup-julia/releases) section of this repo and create a new release (using the GitHub web interface).
 
-git add .gitignore
-
-# No need to commit yet.
-# The release script will run `git commit`.
-```
-
-## Step 5: Make sure you have the necessary dependencies
-
-The `build-release.sh` script requires the following dependencies:
-
-1. Bash
-2. `curl`
-3. `git`
-4. `jq`
-5. `sed`
-
-## Step 6: Run the `build-release.sh` script
-
-```bash
-ls -l bin/build-release.sh
-chmod +x bin/build-release.sh
-ls -l bin/build-release.sh
-
-./bin/build-release.sh julia-actions/setup-julia
-```
-
-Wait a minute or two. The script will build everything and will create a new release branch named `releases/vMAJOR.MINOR.PATCH`.
-
-## Step 7: Push ONLY the `releases/vMAJOR.MINOR.PATCH` branch
-
-Only push the `releases/` branch. Do NOT push any tags yet.
-
-```bash
-git push origin releases/vMAJOR.MINOR.PATCH
-```
-
-Now you need to go to https://github.com/julia-actions/setup-julia/tree/releases/vMAJOR.MINOR.PATCH and wait for CI to finish running.
-
-Do NOT proceed to the next step until CI is all green on the `releases/vMAJOR.MINOR.PATCH` branch.
-
-## Step 8: Push the tags (only after CI is all green)
-
-Once CI is all green on the `releases/vMAJOR.MINOR.PATCH` branch, you can push the tags.
-
-You need to force-push.
-
-```bash
-git push --tags --force
-```
-
-## Step 9: Use the GitHub web UI to create a new GitHub Release
-
-Go to https://github.com/julia-actions/setup-julia/releases  and create a new release for the now-existant `vMAJOR.MINOR.PATCH` tag using the GitHub web interface.
-
-## Step 10: Clean up your local repo
-
-```bash
-git submodule deinit --force .
-git submodule update --init
-git fetch --all --prune
-git checkout master
-git reset --hard origin/master
-```
-
-## Step 11: Delete your local repo
-
-```bash
-cd ..
-ls setup-julia
-rm -rf setup-julia
-```
+For the "choose a tag" drop-down field, select the `v2.2.0` tag that you created and pushed in Part 1 of this guide.

lib/installer.js

@@ -34,6 +34,9 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, ge
 Object.defineProperty(exports, "__esModule", { value: true });
 exports.getJuliaVersionInfo = getJuliaVersionInfo;
 exports.getJuliaVersions = getJuliaVersions;
+exports.getProjectFilePath = getProjectFilePath;
+exports.validJuliaCompatRange = validJuliaCompatRange;
+exports.readJuliaCompatRange = readJuliaCompatRange;
 exports.getJuliaVersion = getJuliaVersion;
 exports.getFileInfo = getFileInfo;
 exports.getDownloadURL = getDownloadURL;
@@ -48,7 +51,8 @@ const os = __importStar(require("os"));
 const path = __importStar(require("path"));
 const retry = require("async-retry");
 const semver = __importStar(require("semver"));
-const LTS_VERSION = '1.6';
+const toml = __importStar(require("toml"));
+const LTS_VERSION = '1.10';
 const MAJOR_VERSION = '1'; // Could be deduced from versions.json
 // Translations between actions input and Julia arch names
 const osMap = {
@@ -112,20 +116,106 @@ function getJuliaVersions(versionInfo) {
         return versions;
     });
 }
-function getJuliaVersion(availableReleases, versionInput, includePrerelease = false) {
+/**
+ * @returns The path to the Julia project file
+ */
+function getProjectFilePath(projectInput = "") {
+    let projectFilePath = "";
+    // Default value for projectInput
+    if (!projectInput) {
+        projectInput = process.env.JULIA_PROJECT || ".";
+    }
+    if (fs.existsSync(projectInput) && fs.lstatSync(projectInput).isFile()) {
+        projectFilePath = projectInput;
+    }
+    else {
+        for (let projectFilename of ["JuliaProject.toml", "Project.toml"]) {
+            let p = path.join(projectInput, projectFilename);
+            if (fs.existsSync(p) && fs.lstatSync(p).isFile()) {
+                projectFilePath = p;
+                break;
+            }
+        }
+    }
+    if (!projectFilePath) {
+        throw new Error(`Unable to locate project file with project input: ${projectInput}`);
+    }
+    return projectFilePath;
+}
+/**
+ * @returns A valid NPM semver range from a Julia compat range or null if it's not valid
+ */
+function validJuliaCompatRange(compatRange) {
+    let ranges = [];
+    for (let range of compatRange.split(",")) {
+        range = range.trim();
+        // An empty range isn't supported by Julia
+        if (!range) {
+            return null;
+        }
+        // NPM's semver doesn't understand unicode characters such as `≥` so we'll convert to alternatives
+        range = range.replace("≥", ">=").replace("≤", "<=");
+        // Cleanup whitespace. Julia only allows whitespace between the specifier and version with certain specifiers
+        range = range.replace(/\s+/g, " ").replace(/(?<=(>|>=|≥|<)) (?=\d)/g, "");
+        if (!semver.validRange(range) || range.split(/(?<! -) (?!- )/).length > 1 || range.startsWith("<=") || range === "*") {
+            return null;
+        }
+        else if (range.search(/^\d/) === 0 && !range.includes(" ")) {
+            // Compat version is just a basic version number (e.g. 1.2.3). Since Julia's Pkg.jl's uses caret
+            // as the default specifier (e.g. `1.2.3 == ^1.2.3`) and NPM's semver uses tilde as the default
+            // specifier (e.g. `1.2.3 == 1.2.x == ~1.2.3`) we will introduce the caret specifier to ensure the
+            // orignal intent is respected.
+            // https://pkgdocs.julialang.org/v1/compatibility/#Version-specifier-format
+            // https://github.com/npm/node-semver#x-ranges-12x-1x-12-
+            range = "^" + range;
+        }
+        ranges.push(range);
+    }
+    return semver.validRange(ranges.join(" || "));
+}
+/**
+ * @returns An array of version ranges compatible with the Julia project
+ */
+function readJuliaCompatRange(projectFileContent) {
+    var _a;
+    let compatRange;
+    let meta = toml.parse(projectFileContent);
+    if (((_a = meta.compat) === null || _a === void 0 ? void 0 : _a.julia) !== undefined) {
+        compatRange = validJuliaCompatRange(meta.compat.julia);
+    }
+    else {
+        compatRange = "*";
+    }
+    if (!compatRange) {
+        throw new Error(`Invalid version range found in Julia compat: ${compatRange}`);
+    }
+    return compatRange;
+}
+function getJuliaVersion(availableReleases, versionInput, includePrerelease = false, juliaCompatRange = "") {
+    // Note: `juliaCompatRange` is ignored unless `versionInput` is `min`
+    let version;
     if (semver.valid(versionInput) == versionInput || versionInput.endsWith('nightly')) {
         // versionInput is a valid version or a nightly version, use it directly
-        return versionInput;
+        version = versionInput;
     }
-    if (versionInput == 'lts') {
-        return getJuliaVersion(availableReleases, LTS_VERSION, false);
+    else if (versionInput == "min") {
+        // Resolve "min" to the minimum supported Julia version compatible with the project file
+        if (!juliaCompatRange) {
+            throw new Error('Unable to use version "min" when the Julia project file does not specify a compat for Julia');
+        }
+        version = semver.minSatisfying(availableReleases, juliaCompatRange, { includePrerelease });
     }
-    if (versionInput == 'pre') {
-        return getJuliaVersion(availableReleases, MAJOR_VERSION, true);
+    else if (versionInput == "lts") {
+        version = semver.maxSatisfying(availableReleases, LTS_VERSION, { includePrerelease: false });
     }
-    // Use the highest available version that matches versionInput
-    let version = semver.maxSatisfying(availableReleases, versionInput, { includePrerelease });
-    if (version == null) {
+    else if (versionInput == "pre") {
+        version = semver.maxSatisfying(availableReleases, MAJOR_VERSION, { includePrerelease: true });
+    }
+    else {
+        // Use the highest available version that matches versionInput
+        version = semver.maxSatisfying(availableReleases, versionInput, { includePrerelease });
+    }
+    if (!version) {
         throw new Error(`Could not find a Julia version that matches ${versionInput}`);
     }
     // GitHub tags start with v, remove it

lib/setup-julia.js

@@ -46,6 +46,7 @@ const installer = __importStar(require("./installer"));
 const archSynonyms = {
     'x86': 'x86',
     'x64': 'x64',
+    'x86_64': 'x64',
     'aarch64': 'aarch64',
     'arm64': 'aarch64'
 };
@@ -72,6 +73,7 @@ function run() {
             const versionInput = core.getInput('version').trim();
             const includePrereleases = core.getInput('include-all-prereleases').trim() == 'true';
             const originalArchInput = core.getInput('arch').trim();
+            const projectInput = core.getInput('project').trim(); // Julia project file
             // It can easily happen that, for example, a workflow file contains an input `version: ${{ matrix.julia-version }}`
             // while the strategy matrix only contains a key `${{ matrix.version }}`.
             // In that case, we want the action to fail, rather than trying to download julia from an URL that's missing parts and 404ing.
@@ -86,6 +88,9 @@ function run() {
             if (!originalArchInput) { // if `originalArchInput` is an empty string
                 throw new Error(`Arch input must not be null`);
             }
+            if (originalArchInput == 'x64' && os.platform() == 'darwin' && os.arch() == 'arm64') {
+                core.warning('[setup-julia] x64 arch has been requested on a macOS runner that has an arm64 (Apple Silicon) architecture. You may have meant to use the "aarch64" arch instead (or left it unspecified for the correct default).');
+            }
             let processedArchInput;
             if (originalArchInput == "default") {
                 // If the user sets the `arch` input to `default`, then we use the
@@ -100,9 +105,15 @@ function run() {
             // before we index into the `archSynonyms` dict.
             const arch = archSynonyms[processedArchInput.toLowerCase()];
             core.debug(`Mapped the "arch" from ${processedArchInput} to ${arch}`);
+            // Determine the Julia compat ranges as specified by the Project.toml only for special versions that require them.
+            let juliaCompatRange = "";
+            if (versionInput === "min") {
+                const projectFilePath = installer.getProjectFilePath(projectInput);
+                juliaCompatRange = installer.readJuliaCompatRange(fs.readFileSync(projectFilePath).toString());
+            }
             const versionInfo = yield installer.getJuliaVersionInfo();
             const availableReleases = yield installer.getJuliaVersions(versionInfo);
-            const version = installer.getJuliaVersion(availableReleases, versionInput, includePrereleases);
+            const version = installer.getJuliaVersion(availableReleases, versionInput, includePrereleases, juliaCompatRange);
             core.debug(`selected Julia version: ${arch}/${version}`);
             core.setOutput('julia-version', version);
             // Search in cache

package.json

@@ -1,6 +1,5 @@
 {
   "name": "setup-julia",
-  "version": "2.3.0",
   "private": true,
   "description": "setup Julia action",
   "main": "lib/setup-julia.js",
@@ -21,25 +20,26 @@
   "author": "Sascha Mann <git@mail.saschamann.eu>",
   "license": "MIT",
   "dependencies": {
-    "@actions/core": "^1.10.1",
+    "@actions/core": "^1.11.1",
     "@actions/exec": "^1.1.1",
     "@actions/io": "^1.1.3",
     "@actions/tool-cache": "^2.0.1",
     "async-retry": "^1.3.3",
-    "semver": "^7.6.3"
+    "semver": "^7.6.3",
+    "toml": "^3.0.0"
   },
   "devDependencies": {
-    "@types/async-retry": "^1.4.8",
-    "@types/jest": "^29.5.12",
-    "@types/node": "^20.14.11",
+    "@types/async-retry": "^1.4.9",
+    "@types/jest": "^29.5.14",
+    "@types/node": "^22.9.0",
     "@types/retry": "^0.12.5",
     "@types/semver": "^7.5.8",
-    "@vercel/ncc": "^0.38.1",
+    "@vercel/ncc": "^0.38.2",
     "jest": "^29.7.0",
     "jest-circus": "^29.7.0",
     "nock": "^13.5.4",
     "prettier": "^3.3.3",
-    "ts-jest": "^29.2.3",
-    "typescript": "^5.5.3"
+    "ts-jest": "^29.2.5",
+    "typescript": "^5.6.3"
   }
 }

src/installer.ts

@@ -9,8 +9,9 @@ import * as path from 'path'
 import retry = require('async-retry')
 
 import * as semver from 'semver'
+import * as toml from 'toml'
 
-const LTS_VERSION = '1.6'
+const LTS_VERSION = '1.10'
 const MAJOR_VERSION = '1' // Could be deduced from versions.json
 
 // Translations between actions input and Julia arch names
@@ -79,23 +80,116 @@ export async function getJuliaVersions(versionInfo): Promise<string[]> {
     return versions
 }
 
-export function getJuliaVersion(availableReleases: string[], versionInput: string, includePrerelease: boolean = false): string {
+/**
+ * @returns The path to the Julia project file
+ */
+export function getProjectFilePath(projectInput: string = ""): string {
+    let projectFilePath: string = ""
+
+    // Default value for projectInput
+    if (!projectInput) {
+        projectInput = process.env.JULIA_PROJECT || "."
+    }
+
+    if (fs.existsSync(projectInput) && fs.lstatSync(projectInput).isFile()) {
+        projectFilePath = projectInput
+    } else {
+        for (let projectFilename of ["JuliaProject.toml", "Project.toml"]) {
+            let p = path.join(projectInput, projectFilename)
+            if (fs.existsSync(p) && fs.lstatSync(p).isFile()) {
+                projectFilePath = p
+                break
+            }
+        }
+    }
+
+    if (!projectFilePath) {
+        throw new Error(`Unable to locate project file with project input: ${projectInput}`)
+    }
+
+    return projectFilePath
+}
+
+/**
+ * @returns A valid NPM semver range from a Julia compat range or null if it's not valid
+ */
+export function validJuliaCompatRange(compatRange: string): string | null {
+    let ranges: Array<string> = []
+    for(let range of compatRange.split(",")) {
+        range = range.trim()
+
+        // An empty range isn't supported by Julia
+        if (!range) {
+            return null
+        }
+
+        // NPM's semver doesn't understand unicode characters such as `≥` so we'll convert to alternatives
+        range = range.replace("≥", ">=").replace("≤", "<=")
+
+        // Cleanup whitespace. Julia only allows whitespace between the specifier and version with certain specifiers
+        range = range.replace(/\s+/g, " ").replace(/(?<=(>|>=|≥|<)) (?=\d)/g, "")
+
+        if (!semver.validRange(range) || range.split(/(?<! -) (?!- )/).length > 1 || range.startsWith("<=") || range === "*") {
+            return null
+        } else if (range.search(/^\d/) === 0 && !range.includes(" ")) {
+            // Compat version is just a basic version number (e.g. 1.2.3). Since Julia's Pkg.jl's uses caret
+            // as the default specifier (e.g. `1.2.3 == ^1.2.3`) and NPM's semver uses tilde as the default
+            // specifier (e.g. `1.2.3 == 1.2.x == ~1.2.3`) we will introduce the caret specifier to ensure the
+            // orignal intent is respected.
+            // https://pkgdocs.julialang.org/v1/compatibility/#Version-specifier-format
+            // https://github.com/npm/node-semver#x-ranges-12x-1x-12-
+            range = "^" + range
+        }
+
+        ranges.push(range)
+    }
+
+    return semver.validRange(ranges.join(" || "))
+}
+
+/**
+ * @returns An array of version ranges compatible with the Julia project
+ */
+export function readJuliaCompatRange(projectFileContent: string): string {
+    let compatRange: string | null
+    let meta = toml.parse(projectFileContent)
+
+    if (meta.compat?.julia !== undefined) {
+        compatRange = validJuliaCompatRange(meta.compat.julia)
+    } else {
+        compatRange = "*"
+    }
+
+    if (!compatRange) {
+        throw new Error(`Invalid version range found in Julia compat: ${compatRange}`)
+    }
+
+    return compatRange
+}
+
+export function getJuliaVersion(availableReleases: string[], versionInput: string, includePrerelease: boolean = false, juliaCompatRange: string = ""): string {
+    // Note: `juliaCompatRange` is ignored unless `versionInput` is `min`
+    let version: string | null
+
     if (semver.valid(versionInput) == versionInput || versionInput.endsWith('nightly')) {
         // versionInput is a valid version or a nightly version, use it directly
-        return versionInput
+        version = versionInput
+    } else if (versionInput == "min") {
+        // Resolve "min" to the minimum supported Julia version compatible with the project file
+        if (!juliaCompatRange) {
+            throw new Error('Unable to use version "min" when the Julia project file does not specify a compat for Julia')
+        }
+        version = semver.minSatisfying(availableReleases, juliaCompatRange, {includePrerelease})
+    } else if (versionInput == "lts") {
+        version = semver.maxSatisfying(availableReleases, LTS_VERSION, { includePrerelease: false });
+    } else if (versionInput == "pre") {
+        version = semver.maxSatisfying(availableReleases, MAJOR_VERSION, { includePrerelease: true });
+    } else {
+        // Use the highest available version that matches versionInput
+        version = semver.maxSatisfying(availableReleases, versionInput, {includePrerelease})
     }
 
-    if (versionInput == 'lts') {
-        return getJuliaVersion(availableReleases, LTS_VERSION, false)
-    }
-
-    if (versionInput == 'pre') {
-        return getJuliaVersion(availableReleases, MAJOR_VERSION, true)
-    }
-
-    // Use the highest available version that matches versionInput
-    let version = semver.maxSatisfying(availableReleases, versionInput, {includePrerelease})
-    if (version == null) {
+    if (!version) {
         throw new Error(`Could not find a Julia version that matches ${versionInput}`)
     }
 

src/setup-julia.ts

@@ -15,6 +15,7 @@ import * as installer from './installer'
 const archSynonyms = {
     'x86': 'x86',
     'x64': 'x64',
+    'x86_64': 'x64',
     'aarch64': 'aarch64',
     'arm64': 'aarch64'
 }
@@ -44,6 +45,7 @@ async function run() {
         const versionInput = core.getInput('version').trim()
         const includePrereleases = core.getInput('include-all-prereleases').trim() == 'true'
         const originalArchInput = core.getInput('arch').trim()
+        const projectInput = core.getInput('project').trim()  // Julia project file
 
         // It can easily happen that, for example, a workflow file contains an input `version: ${{ matrix.julia-version }}`
         // while the strategy matrix only contains a key `${{ matrix.version }}`.
@@ -60,6 +62,10 @@ async function run() {
             throw new Error(`Arch input must not be null`)
         }
 
+        if (originalArchInput == 'x64' && os.platform() == 'darwin' && os.arch() == 'arm64') {
+            core.warning('[setup-julia] x64 arch has been requested on a macOS runner that has an arm64 (Apple Silicon) architecture. You may have meant to use the "aarch64" arch instead (or left it unspecified for the correct default).')
+        }
+
         let processedArchInput: string;
         if (originalArchInput == "default") {
             // If the user sets the `arch` input to `default`, then we use the
@@ -74,9 +80,16 @@ async function run() {
         const arch = archSynonyms[processedArchInput.toLowerCase()]
         core.debug(`Mapped the "arch" from ${processedArchInput} to ${arch}`)
 
+        // Determine the Julia compat ranges as specified by the Project.toml only for special versions that require them.
+        let juliaCompatRange: string = "";
+        if (versionInput === "min") {
+            const projectFilePath = installer.getProjectFilePath(projectInput)
+            juliaCompatRange = installer.readJuliaCompatRange(fs.readFileSync(projectFilePath).toString())
+        }
+
         const versionInfo = await installer.getJuliaVersionInfo()
         const availableReleases = await installer.getJuliaVersions(versionInfo)
-        const version = installer.getJuliaVersion(availableReleases, versionInput, includePrereleases)
+        const version = installer.getJuliaVersion(availableReleases, versionInput, includePrereleases, juliaCompatRange)
         core.debug(`selected Julia version: ${arch}/${version}`)
         core.setOutput('julia-version', version)